According to the graph, your answers would be:
A producer goes out of business.
A natural disaster causes production to drop.
A resource needed to produce more of the good has became scarce.
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A producer goes out of business would be your first answer choice because if the producer goes out of business, they can't produce the products they are making. If there are no products made, you can't make money because you can't sell stuff that you don't have. That would make the graph go down instead of up.
A natural disaster causes production to drop would be your second answer choice because a natural disaster can destroy a facility that produces the product, and while the facility is destroyed, they can't make any products. Again, if there are no products to sell, there would be no business, in other words, no money.
A resource needed to produce more of the good has became scarce would be your last answer because if the resource that you needed has become scarce, meaning that it is insufficient (costing you more than what it's actually worth), you wouldn't want to use that resource. If that's the resource your company needs and it's going to cost you more than what you can sell it for, you wouldn't want to use it and would see a decrease in supplies while trying to find something else.
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